#include <fstream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int v[17], n;
void back(int k)
{
    if(k == n + 1) return;
    for(int i = v[k - 1] + 1; i <= n; ++ i)
    {
        v[k] = i;
        for(int j = 1; j <= k; ++ j)
            g << v[j] << " ";
        g << "\n";
        back(k + 1);
    }
}
int main()
{
    f >> n;
    back(1);
    return 0;
}